Warning Message box

[C# Programming]

I compile my form But view warning error
the error message is:Child list for field tblmembers cannot be createdMy form Code is:
using System;
using System.Collections.Generic;
using System.Data.OleDb;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DevComponents.DotNetBar;
using DevComponents.DotNetBar.Rendering;

namespace Library_Project
{
public partial class ViewInfo : Form
{
public ViewInfo()
{
InitializeComponent();
}

private void ViewInfo_Load(object sender, EventArgs e)
{
//----------DataGrid Member Header & View
//---------------------------------------
DataSet dsDataMember = null;
memberBL thisMember = new memberBL();
dsDataMember = thisMember.View();
dataGridViewX1.DataBindings.Add(new Binding("DataSource", dsDataMember, "tblmembers"));
dataGridViewX1.Columns[0].HeaderText = "کد عضو";
dataGridViewX1.Columns[1].HeaderText = "نام عضو";
dataGridViewX1.Columns[2].HeaderText = "نام خانوادگ?";
dataGridViewX1.Columns[3].HeaderText = "شماره شناسنامه";
dataGridViewX1.Columns[4].HeaderText = "کد مل?";
dataGridViewX1.Columns[5].HeaderText = "تار?خ تولد";
dataGridViewX1.Columns[6].HeaderText = "شغل";
dataGridViewX1.Columns[7].HeaderText = "تلفن";
dataGridViewX1.Columns[8].HeaderText = "موبا?ل";
dataGridViewX1.Columns[9].HeaderText = "ادرس";
dataGridViewX1.Columns[10].HeaderText = "تار?خ عضو?ت";
//----------DataGrid Book Header & View
//---------------------------------------
DataSet dsDataBook = null;
bookBL thisBook = new bookBL();
dsDataBook = thisBook.View();
dataGridViewX2.DataBindings.Add(new Binding("DataSource", dsDataBook, "tblbooks"));
dataGridViewX2.Columns[0].HeaderText = "کد کتاب";
dataGridViewX2.Columns[1].HeaderText = "نام کتاب";
dataGridViewX2.Columns[2].HeaderText = "ناشر";
dataGridViewX2.Columns[3].HeaderText = "مترجم";
dataGridViewX2.Columns[4].HeaderText = "شابک";
dataGridViewX2.Columns[5].HeaderText = "موضوع";
//---------TextBox Members Information
//--------------------------------------
try {
textBox1.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.membercode"));
textBox2.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.name"));
textBox3.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.family"));
textBox4.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.shsh"));
textBox5.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.melicode"));
textBox6.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.tavalod"));
textBox7.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.shoghl"));
textBox8.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.tel"));
textBox9.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.mobile"));
textBox10.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.adr"));
textBox11.DataBindings.Add(new Binding("Text", dsDataMember, "tblmembers.trkhozv"));
}
catch (Exception err)
{
MessageBox.Show(err.Message.ToString());
}

//---------TextBox Members Information
//--------------------------------------
try {
textBox12.DataBindings.Add(new Binding("Text", dsDataBook, "tblmembers.codebook"));
textBox13.DataBindings.Add(new Binding("Text", dsDataBook, "tblmembers.bookname"));
textBox14.DataBindings.Add(new Binding("Text", dsDataBook, "tblmembers.nasher"));
textBox15.DataBindings.Add(new Binding("Text", dsDataBook, "tblmembers.motarjem"));
textBox16.DataBindings.Add(new Binding("Text", dsDataBook, "tblmembers.shabok"));
textBox17.DataBindings.Add(new Binding("Text", dsDataBook, "tblmembers.mozo"));
}
catch (Exception err)
{
MessageBox.Show(err.Message.ToString());

}
}

private void dataGridViewX1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
textBox1.Text = dataGridViewX1.CurrentRow.Cells[0].Value.ToString();
textBox2.Text = dataGridViewX1.CurrentRow.Cells[1].Value.ToString();
textBox3.Text = dataGridViewX1.CurrentRow.Cells[2].Value.ToString();
textBox4.Text = dataGridViewX1.CurrentRow.Cells[3].Value.ToString();
textBox5.Text = dataGridViewX1.CurrentRow.Cells[4].Value.ToString();
textBox6.Text = dataGridViewX1.CurrentRow.Cells[5].Value.ToString();
textBox7.Text = dataGridViewX1.CurrentRow.Cells[6].Value.ToString();
textBox8.Text = dataGridViewX1.CurrentRow.Cells[7].Value.ToString();
textBox9.Text = dataGridViewX1.CurrentRow.Cells[8].Value.ToString();
textBox10.Text = dataGridViewX1.CurrentRow.Cells[9].Value.ToString();

}
}
}What is the Problem?